发明人钱学锋,罗永刚,沈红梅. "Method for the Synthesis of Tert-butyl 4-(4-cyanopyridin-2-yl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 111163451 A, 授权公告日 2023-01-01.
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